So things are just a little rocky at the moment, but I guess that's to be expected. And the issues aren't that serious. Yesterday Siri was down again for some users. Siri's interpretation of your commands and questions happens not on your iPhone 4S but on Apple's servers. If there's a problem on Apple's end, Siri becomes uncommunicative. CNET and TiPb were among the sites that reported the outages. Some users found that resetting their phone helped.